Stand boiler



Sept. 22, 1959 c. z. ALEXANDEl STAND BOILER Filed Dec.

INV ENTOR. CARL Z. ALEXANDE,Q

'A'TTOIQA/EKS' United Sta Patt O 2,905,153 l STAN now Carl z. Alexander, Chatham, NJ. Application December 10', '1954,'Se rial' No. 474,369 1 Claim. cr. 122 -166) This invention relates to a stand boiler and refers more particularly to water heaters and boilers for domestic heating and hot water supply.

An object of the present invention is the provision of a boiler and water heater which is inexpensive in construction and most durable and efficient in operation.

Another object is the provision of a boiler and water heater which is particularly adapted for small homes.

A further object is theprovision of a water heater and boiler, for small homes which is so constructed that it will provide sutficient heat and hot water which will give fast and clean hotwater in any required amounts and which is most dependable in operation.

Other objects of the present invention will become apparent in the course of the following specification.

In accomplishing the objects of the present invention it was found desirable to provide a stand boiler and water heater having the form of a vertical tank disposed above the fire box and containing a flue extending through the tank; in accordance with the present invention the flue includes an enlarged space containing baflle pipes located within the flue and serving as baflles absorbing the heat and communicating it to the water located within the pipes. The battle pipes have vertically extending middle portions as well as end portions attached to the tank at different levels. The two ends of each batfle pipe may be attached to the same side of the tank.

Due to the vertical arrangement of the bafile pipes within the flue, a circulation of water takes place in vertical planes'within the tank which is similar to a percolating action and as a result of which the heating of the water within the tank is greatly facilitated and accelerated while the consumption of fuel takes place most economically.

The invention will appear more clearly from the following detailed description when taken in connection with the accompanying drawing showing by way of example a preferred embodiment of the inventive idea.

In the drawing:

Fig. 1 is a sectional view of a boiler and water heater constructed in accordance with the principles of the present invention;

Fig. 2 is a section along the line 2-2 of Fig. 1;

Fig. 3 is a diagrammatic view showing the arrangement of the baflle pipes within the flue.

The water heater and boiler shown in Figs. 1, 2 and 3 of the drawings includes a tank which is preferably rectangular in form although, of course, tanks of any other suitable shape may be conveniently employed. The tank 10 has a housing which includes a front wall 11, a rear wall 12, side walls 13 and 14, a bottom 15 and a top 16.

The bottom chamber 17 of the tank 10 constitutes a fire box section which is of standard construction and is not further illustrated. The fire box 17 is separated from the rest of the tank by a plate 18 which has a rectangular opening 19 constituting an inlet for the flue 20.

The flue 20 includes an essentially rectangular lower compartment 21 and an upper tubular portion 22. The lower portion 21 is separated from the interior of the tank by a front wall 23, a rear wall 24, side walls 25 and 26 and a top plate 27. The top plate 27 'has a circular opening 28 which connects the lower flue portion 21 with the upper flue portion 22. A pipe or cylindrical member 29 extends between the plate 27 and the upper plate 16 and is connected to the edges of an opening 30 provided in the plate 16.

In the example illustrated, the flue compartment 21 contains ten batfle pipes 31 'to 40 inclusive. As shown in Fig. 1, each of the baflie pipes has a central vertical portion extending substantially from top to bottom of the chamber 21 and horizontal end portions extending substantially across the chamber 21. The vertical portions of the pipes 31 to 35 are located close to the wall 26, while the vertical portions of the pipes 36 to 40 are located close to the wall 25. Byway of example, the pipe 31 has a central portion 41 located close to the wall 26 and end portions 42 and 43 extending across the chamber 21 and attached to the wall 25, the end portion 42 being located at the bottom of the chamber 21, while the end portion 43 is located at the topof the chamber 21 (Fig. 3). The end portion 43 is mounted in an opening 43a provided in the wall 25, while the end portion 42 is mounted in an opening 42a in the same wall 25.

The pipe next to the pipe;31 is' the pipe 36 which has a central portion 44 extending close to the1wall-25, an upper end portion 45 and a lower end portion46. The end portions 45 and 46 are mounted in openings 45a and 46a, respectively, provided in the wall 26. The other baflie pipes are arranged in the same manner. It is thus apparent that the upper portions 43, 45, etc. of the pipes form a grid-like baffle which fills the cross-sectional area of the lower flue section 21 close to the upper flue section 22. Similarly, the lower portions 42, 46 etc. of the pipes form a grid-like bafile filling the cross-sectional area of the lower flue section 21 close to the fire box section 17.

In operation, the tank 10 is filled with water through an inlet 47. The tank 10 is preferably filled only in part leaving an upper space which serves as an air compression chamber and a substitute for an expansion tank. Water will fill the baffle pipes 31 to 40. The fire box 17 is heated in the usual manner and hot gases pass through the flue 20 and escape through a smoke stack or the like which is not shown in the drawings and which may be attached to the opening 30 in the top plate of the tank. Water in the baflle pipes 31 to 40 located in the flue 20 will be heated first and will provide for a circulation of water in vertical planes as a result of which the water within the tank 10 will be heated very quickly. This heated water will also heat a domestic hot water supply coil 48 which is attached to the top plate 16 and which extends substantially parallel to the flue pipe 29. The coil 48 extends downwardly from the top plate 16 and ends close to the upper ends of the pipes 36 to 40. The domestic hot water supply coil 48 will be quickly heated by the hot water within the tank 10 and will supply the hot water to the users. Domestic pipe lines (not shown) may be connected to the openings 49 and 50 in the usual manner. Thus a cold water supply line may be connected to opening 49, and a hot water delivery pipe may be connected to opening 50.

The device of the invention may be employed, for example, to supply hot water for hot water radiators of a home. In such case, a hot water delivery pipe line (not shown) leading to the radiators will be connected to opening 47, and a return line (also not shown) from the radiators will be connected to opening 51 of the tank.

It is apparent that the described apparatus provides a most effective and inexpensive means for supplying hot water for heating purposes and for home consumption to the users, particularly for small homes. It is apparent, however, that the same apparatus may be employed for supplying steam or' vapour and is not necessarily restricted to domestic use.

It is apparent that the example shown above has been given solely by Way or illustration and not by way of limitation and that it is subject to variations and modifications within the scope of the appended claim.

What is claimed is:

A stand boiler, comprising a vertical tank having a cover and side walls, a horizontal plate located within said tank and separating the interior thereof into a lower fire box section and an upper section, a flue within said upper section, said flue having a larger lower section carried by said plate and communicating with said fire box, said lower flue section having substantially rectangular walls, and an upper tubular substantially smaller section communicating with said larger rectangular section and with an opening formed in said cover, said flue being located closer to one of the side walls of the tank than to other side walls thereof and being spaced from all said side walls, the upper smaller flue section being located eccentrically relatively to the lower larger flue section, a plurality of water circulating baflle pipes located side by side in said lower flue section, each of the baflle pipes having a central substantially vertical portion and horizontal upper and lower end portions connected with the upper and lower ends of said vertical portion and extending though openings formed in the walls of the lower flue section, said horizontal upper end portions of the baflle pipes extending parallel to each other between two opposite walls of said lower flue section close to the upper flue section and filling the cross-sectional area of the lower flue section to form a grid-like battle, said horizontal lower end portions of the bafile pipes extending parallel to each other between two opposite walls of said lower flue section close to the fire box section and filling the crosssectional area of the lower flue section to form a gridlike baflle, the openings for the end portions of one battle pipe being located upon one wall of the lower flue section while the openings for the end portions of an adjacent battle pipe being located upon the opposite wall of the lower flue section, the vertical portion of each bafile pipe extending parallelv and substantially close to that wall of the lower flue section which is opposite to the wall having openings for the end portions of the same 'baflle pipe, whereby the end portions of each baffie pipe extend substantially across the entire lower flue section, and a hot water coil having two ends attached to said cover and a coil portion located within the upper section of the tank close to the openings for the upper end portions of the bafile pipes.

References Cited in the file of this patent UNITED STATES PATENTS 194,164 Mills Aug. 14, 1877 1,323,302 Martens Dec. 2, 1919 1,684,997 Kraft Sept. 18, 1928 2,187,850 Byrum Ian. 23, 1940 2,258,696 Betz et a1 Oct. 14, 1941 2,642,046 Alexander June 16, 1953 FOREIGN PATENTS 396 Great Britain of 1874 

